90203440

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{16829}}^1$

素因数の和:16909

約数の個数: 40

約数和(自身を含む): 212865840

約数和(自身を除く): 122662400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 16829, 33658, 67316, 84145, 134632, 168290, 269264, 336580, 673160, 1127543, 1346320, 2255086, 4510172, 5637715, 9020344, 11275430, 18040688, 22550860, 45101720, 90203440]

約数ペア:

[(1, 90203440), (2, 45101720), (4, 22550860), (5, 18040688), (8, 11275430), (10, 9020344), (16, 5637715), (20, 4510172), (40, 2255086), (67, 1346320), (80, 1127543), (134, 673160), (268, 336580), (335, 269264), (536, 168290), (670, 134632), (1072, 84145), (1340, 67316), (2680, 33658), (5360, 16829)]